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Calculate MAD for each method. $($Round your answers to $2$ decimal places.$)$

a$)3-$month moving average $=17\mathrm{.}63$

Exponential smoothing $=17\mathrm{.}61$

b$)3-$month moving average $=19\mathrm{.}61$

Exponential smoothing $=19\mathrm{.}63$

c$)3-$month moving average $=19\mathrm{.}63$ Exponential smoothing $=19\mathrm{.}61$

d$)3-$month moving average $=17\mathrm{.}61$

Exponential smoothing $=17\mathrm{.}63$